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Design and Evaluation of Self Organizing Protocols for Wireless Networks

Abstract

In this project, we are investigating the medium access control aspect of a self-organizing protocol.  This work extends our previously developed routing algorithm for an evolving wireless network of low-cost nodes with varying transmitting powers and arbitrary topology.  To capitalize on our structure, we are designing a scheme for the medium access control (MAC) layer of the network.  The scheme entails minimal MAC logic in the low-cost nodes and requires a single frequency to operate.

As a second area of research, we are considering the design and optimization of multiple-layer networks, which are important for overcoming reliability and congestion problems that may develop in a single-layer centrally controlled network.  A multiple-layer network entails multiple roots that must operate at a different frequency.  Thus, optimal root placement and layer scheduling algorithms are being designed.  We are also developing self-healing protocols for single-layer and multiple-layer networks.

Students

  • Lance Hester (Ph.D. - June 2001)
  • Hyunjeong Lee (Ph.D. - June 2003)

Publications

  1. L. Hester, C.C. Lee and R.J. O'Dea, "A Self-Organizing Wireless Network with Optimal Hierarchical Routing," Proc. of IWCN'02.
  2. H.J. Lee, C.C Lee, L. Hester and R.J. O'Dea, "Optimum Root Placement in a Multiple-Hop Wireless Network," Proc. of WCNC'02.pdf
  3. H.J. Lee and C.C. Lee, "Layer Scheduling in a Multiple-Layer Self-Organizing Wireless Network," Proc. of GLOBECOM'02.pdf 
  4. H.J. Lee and C.C. Lee, "Integrated Multi-hop and Cellular Data Networks," Proc. of VTC '03.pdf 

Theses

  1. L. Hester, "A Self-Organizing Wireless Network Protocol", Ph.D. Thesis, Department of Electrical and Computer Engineering, Northwestern University, June 2001.
  2. H.J. Lee, "Protocols and Analysis of Self-Organizing Wireless Networks", Ph.D. Thesis, Department of Electrical and Computer Engineering, Northwestern University, June 2003.pdf






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